llvm-6502/test/CodeGen/ARM/aliases.ll
Rafael Espindola 3d47402f2e Error if we see an alias to a declaration.
In ELF and COFF an alias is just another offset in a section. There is no way
to represent an alias to something in another file.

In MachO, the spec has the N_INDR type which should allow for exactly that, but
is not currently implemented. Given that it is specified but not implemented,
we error in codegen to avoid miscompiling but don't reject aliases to
declarations in the verifier to leave the option open of implementing it.

In the past we have used alias to declarations as a way of implementing
weakref, which is why it exists in some old tests which this patch updates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194705 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-14 13:58:06 +00:00

47 lines
823 B
LLVM

; RUN: llc < %s -mtriple=arm-linux-gnueabi | FileCheck %s
; CHECK: .globl test
; CHECK: .globl foo1
; CHECK: foo1 = bar
; CHECK: .globl foo2
; CHECK: foo2 = bar
; CHECK: .weak bar_f
; CHECK: bar_f = foo_f
; CHECK: bar_i = bar
; CHECK: .globl A
; CHECK: A = bar
@bar = global i32 42
@foo1 = alias i32* @bar
@foo2 = alias i32* @bar
%FunTy = type i32()
define i32 @foo_f() {
ret i32 0
}
@bar_f = alias weak %FunTy* @foo_f
@bar_i = alias internal i32* @bar
@A = alias bitcast (i32* @bar to i64*)
define i32 @test() {
entry:
%tmp = load i32* @foo1
%tmp1 = load i32* @foo2
%tmp0 = load i32* @bar_i
%tmp2 = call i32 @foo_f()
%tmp3 = add i32 %tmp, %tmp2
%tmp4 = call %FunTy* @bar_f()
%tmp5 = add i32 %tmp3, %tmp4
%tmp6 = add i32 %tmp1, %tmp5
%tmp7 = add i32 %tmp6, %tmp0
ret i32 %tmp7
}